Journal of Magnesium and Alloys最新文献_第2页

Recrystallization aspects and factors affecting their roles in Mg alloys: A comprehensive review 再结晶及其在镁合金中作用的影响因素：全面综述

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-18 DOI: 10.1016/j.jma.2025.03.020

S.S.A. Shah, Manping Liu, Azim Khan, Farooq Ahmad, Umer Masood Chaudry, Muhammad Yar Khan, M.R. Abdullah, Shiwei Xu, Zhen Peng

{"title":"Recrystallization aspects and factors affecting their roles in Mg alloys: A comprehensive review","authors":"S.S.A. Shah, Manping Liu, Azim Khan, Farooq Ahmad, Umer Masood Chaudry, Muhammad Yar Khan, M.R. Abdullah, Shiwei Xu, Zhen Peng","doi":"10.1016/j.jma.2025.03.020","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.020","url":null,"abstract":"Recrystallization stands as an essential process that influences the microstructure and properties of magnesium (Mg) alloys, yet its mechanisms remain complex and multifaceted. This review explores the key factors affecting the recrystallization behavior of Mg alloys, emphasizing how their unique structural characteristics impact the driving forces and dynamics of recrystallization. Unlike conventional alloys, Mg alloys exhibit distinctive recrystallization kinetics, which is significantly affected by deformation conditions, such as strain rate, temperature, and processing methods (e.g., rolling, forging, and extrusion). The process is also influenced by material characteristics, including initial grain size, texture, dislocation density, solute clustering, and stacking fault energy. Additionally, uneven strain distribution, stress concentrations, and stored energy play crucial roles in shaping the formation of recrystallized grains, particularly near grain boundaries. Notably, recrystallization is driven by dislocation accumulation and the availability of slip systems, with new strain-free grains typically forming in regions of high dislocation density. This paper synthesizes the existing literature to provide a comprehensive understanding of the mechanisms and kinetics of recrystallization in Mg alloys, highlighting the influence of microstructural features such as second-phase particles and grain boundary characteristics. It also identifies key challenges and suggests promising directions for future research, including optimizing material compositions and the interaction between deformation conditions via machine learning.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"128 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143846507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of warm rotary swaging on the mechanical and operational properties of the biodegradable Mg-1 %Zn-0.6 %Ca alloy 热旋锻对可生物降解mg - 1% zn - 0.6% Ca合金力学性能和使用性能的影响

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-16 DOI: 10.1016/j.jma.2025.03.019

N. Martynenko, N. Anisimova, G. Rybalchenko, E. Lukyanova, O. Rybalchenko, I. Shchetinin, G. Babayeva, N.V. Pashinzeva, A. Gorbenko, D. Temralieva, M. Kiselevskiy, V. Andreev, S. Dobatkin

{"title":"Effect of warm rotary swaging on the mechanical and operational properties of the biodegradable Mg-1 %Zn-0.6 %Ca alloy","authors":"N. Martynenko, N. Anisimova, G. Rybalchenko, E. Lukyanova, O. Rybalchenko, I. Shchetinin, G. Babayeva, N.V. Pashinzeva, A. Gorbenko, D. Temralieva, M. Kiselevskiy, V. Andreev, S. Dobatkin","doi":"10.1016/j.jma.2025.03.019","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.019","url":null,"abstract":"A study of the effect of rotary swaging (RS) at 350 °C on mechanical properties, corrosion resistance and biocompatibility in vitro and in vivo of biodegradable Mg-1 %Zn-0.6 %Ca alloy was conducted. It is shown that the formation of a recrystallized microstructure after RS with a grain size of 3.2 ± 0.2 μm leads to an increase in the strength of the alloy without reduction of level of ductility and corrosion resistance. At the same time, aging of the quenched alloy at 100 °C for 8 h leads to a slight increase in strength, but significantly reduces its ductility and corrosion resistance. The study of the degradation process of the alloy in the quenched state and after RS, both under in vitro and in vivo conditions, did not reveal a significant difference between these two microstructural states. However, an increase in the duration of incubation of the alloy in a complete growth medium from 4 h to 24 days leads to a decrease in the degradation rate (DR) by 4 times (from ∼2 to ∼0.5 mm/year) due to the formation of a dense layer of degradation products. The study of biocompatibility in vitro did not reveal a significant effect of RS on the hemolytic and cytotoxic activity of the alloy. No signs of systemic toxicity were observed after subcutaneous implantation of alloy samples into mice before and after RS. However, it was found that RS promotes uniform degradation of the alloy over the entire contact surface. In summary, RS at 350 °С allows to increase the strength of Mg-1 %Zn-0.6 %Ca alloy up to 348 ± 5 MPa at a ductility level of 17.3 ± 2.8% and a DRin vivo equal to 0.56 ± 0.12 mm/year without impairing its biocompatibility in vitro and in vivo.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"4 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143836855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The development and prospect of bio-Mg alloy materials 生物镁合金材料的发展与展望

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-16 DOI: 10.1016/j.jma.2025.04.005

Jia She, Xianhua Chen

引用次数: 0

Deep drawing of magnesium alloys: A review 镁合金深拉深研究进展

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-16 DOI: 10.1016/j.jma.2025.02.015

Jalumedi Babu, Anjaiah Madarapu, Deepa Kodali, M. Venkata Ramana

引用次数: 0

Unveiling anomalous strengthening and deformation mechanism evolution in a Mg-Gd-Y-Zr alloy under rate-temperature coupling effects 揭示速率-温度耦合作用下Mg-Gd-Y-Zr合金的异常强化和变形机制演变

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-15 DOI: 10.1016/j.jma.2025.03.018

Jingli Li, Chen Wen, Xiuzhu Han

{"title":"Unveiling anomalous strengthening and deformation mechanism evolution in a Mg-Gd-Y-Zr alloy under rate-temperature coupling effects","authors":"Jingli Li, Chen Wen, Xiuzhu Han","doi":"10.1016/j.jma.2025.03.018","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.018","url":null,"abstract":"While the deformation behavior of rare-earth magnesium alloys at high temperatures has been extensively studied, the deformation mechanisms under moderate-to-low temperatures and high strain rates remain insufficiently understood. To address this gap, hot compression tests were conducted on a Mg-11Gd-3Y-0.5Zr (wt.%) alloy over a temperature range of 150 °C–450 °C under strain rates of 10⁻³ s⁻¹ (low strain rate (LSR)) and 10 s⁻¹ (high strain rate (HSR)) to explore the strain rate-temperature coupling effects during hot deformation. The results revealed an anomalous increase in peak stress at 150 °C–250 °C as the strain rate decreased, attributed to the combined effects of nano-precipitates, dislocation cell structures, and serrated flow induced by dynamic strain aging. At higher temperatures, strain rate influences softening pathways: under HSR at 450 °C, the effect of twinning shifts from strengthening to facilitating dynamic recrystallization (DRX), resulting in substantial grain refinement (∼4 µm, 81% area fraction at a strain of 0.6). In contrast, at LSR, softening is dominated by dynamic recovery at 350 °C, with limited DRX (∼4 µm grains, 10% area fraction at a strain of 0.6) occurs at 400 °C. These findings clarify the dual role of twinning and its interaction with rate-temperature conditions, providing valuable insights into optimizing the hot processing of rare-earth magnesium alloys.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"74 5 Pt 1 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electron-induced evolution of dislocation density and morphology in Mg-Y-Nd-Gd-Zr alloy at ultra-low temperature 超低温下Mg-Y-Nd-Gd-Zr合金位错密度和形貌的电子诱导演化

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-15 DOI: 10.1016/j.jma.2025.03.017

Chengqian Huang, Zhen Lu, Chao Xu, Xiaojun Wang, Chengcai Zhang, Dekai Liu, Bugang Teng, Lianmei Wu, Fei Li, Manman Yi

{"title":"Electron-induced evolution of dislocation density and morphology in Mg-Y-Nd-Gd-Zr alloy at ultra-low temperature","authors":"Chengqian Huang, Zhen Lu, Chao Xu, Xiaojun Wang, Chengcai Zhang, Dekai Liu, Bugang Teng, Lianmei Wu, Fei Li, Manman Yi","doi":"10.1016/j.jma.2025.03.017","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.017","url":null,"abstract":"This study elucidates the non-thermal mechanism of dislocation density reduction in a Mg-Y-Nd-Gd-Zr alloy under continuous electropulsing (6.67–15 A/mm²) at ultra-low temperatures (−150 °C to −196 °C) through tripartite characterization and first-principles analysis. Electron backscatter diffraction (EBSD) reveals a 15.2 % decrease in geometrically necessary dislocation (GND) density with increasing current, while X-ray line profile analysis (XLPA) confirms the inverse correlation between current intensity and overall defect density. Transmission electron microscopy (TEM) directly visualizes the dissolution of entangled dislocation clusters into isolated lines under high-current treatment (15 A/mm²), corroborating the statistical trends. First-principles calculations demonstrate that localized charge accumulation at defect sites reduces Mg vacancy formation energy by up to 2.8 %, lowering lattice resistance to dislocation glide. This charge-state-dependent vacancy proliferation provides a mechanistic link between electron flow and dislocation annihilation. The reduction of vacancy formation energy is a significant factor in the electron-induced dislocation evolution effect at ultra-low temperatures. These findings provide direct evidence for electron-induced dislocation annihilation mechanisms independent of Joule heating, advancing the understanding of electroplasticity in hexagonal close-packed alloys, and providing a novel approach for rapid, non-oxidative microstructural and property tuning of magnesium alloys.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"23 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-situ high-dynamic micro hammering enhanced wire-arc direct energy deposition of magnesium alloy 原位高动态微锤强化镁合金丝弧直接能量沉积

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-15 DOI: 10.1016/j.jma.2025.03.022

Zhifei Xu, Jun Xiao, Shujun Chen, Chao Ding, Shengnan Gai, Zhaoyang Yan

{"title":"In-situ high-dynamic micro hammering enhanced wire-arc direct energy deposition of magnesium alloy","authors":"Zhifei Xu, Jun Xiao, Shujun Chen, Chao Ding, Shengnan Gai, Zhaoyang Yan","doi":"10.1016/j.jma.2025.03.022","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.022","url":null,"abstract":"Wire-arc direct energy deposition (WA-DED) has emerged as a suitable solution for the rapid manufacturing of magnesium (Mg) alloys, and the in-situ improvement of the microstructure and properties is essential to promote its further application. In this work, a novel in-situ high-dynamic micro hammering enhanced WA-DED method for Mg alloys based on linear actuator was proposed, and the relevant system was developed. The special terminal hammering head could be sufficiently close to the molten pool to enable high-frequency uniform hammering of the just solidified Mg alloy. Two hammered layers of AZ31B Mg alloy with different levels of deformation (20% and 35%) were fabricated to compare with the as-deposited layer. The results showed that the temperature of the hammered area reached 450 °C and that the hammering flattened the surface of the deposited layer while the induced strain was sufficiently transmitted to the bottom of the layer. The formation of numerous {10−12} extension twins were involved in strain coordination in all regions of the moderately deformed layer (#H-20). Continuous dynamic recrystallisation (CDRX), twin-CDRX and twinning together contribute to grain refinement, reducing the average grain size from 161.5 µm to 32.5 µm. For severely deformed layers (#H-35), a greater number of proliferating dislocations led to a high degree of CDRX, resulting in the reduction of stress concentrations thereby inhibiting twinning, and thus CDRX was the dominant mechanism driving the microstructure evolution, especially in the top region. The microhardness of in-situ hammered samples H-20 and H-35 increased by 17.7% and 31.7%, respectively, and the grain boundary strengthening and dislocation strengthening both contributed to the improvement of mechanical properties. These promising findings will facilitate the application of in-situ hammering technology in additive manufacturing using WA-DED.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"7 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143836857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reduced graphene oxide/patronite composite as highly active catalyst precursors for enhancing the hydrogen desorption of MgH2 还原氧化石墨烯/patronite复合材料作为促进MgH2氢解吸的高活性催化剂前驱体

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-12 DOI: 10.1016/j.jma.2025.03.014

Yanxia Liu, Chenxing Wang, Yan Song, Zhenglong Li, Xinqiang Wang, Fulai Qi, Jian Chen, Yongfeng Liu, Mingxia Gao, Hongge Pan

{"title":"Reduced graphene oxide/patronite composite as highly active catalyst precursors for enhancing the hydrogen desorption of MgH2","authors":"Yanxia Liu, Chenxing Wang, Yan Song, Zhenglong Li, Xinqiang Wang, Fulai Qi, Jian Chen, Yongfeng Liu, Mingxia Gao, Hongge Pan","doi":"10.1016/j.jma.2025.03.014","DOIUrl":"https://doi.org/10.1016/j.jma.2025.03.014","url":null,"abstract":"Although MgH2 is widely deemed to be the most promising solid-state hydrogen storage materials for the medium-high temperature fuel-cell applications expected in the near future, the high-temperature desorption and sluggish hydrogen absorption/desorption kinetics are the major challenges for its applications. Herein, reduced graphene oxide/patronite nanoparticle composite (rGO@VS4) is successfully synthesized using an ionic liquid (IL)-assisted hydrothermal method, and superior catalytic effects originated from the rGO@VS4 composite precursor towards the hydrogen storage reaction of MgH2 are systematically investigated. The VS4 reacts with MgH2 leads to the in-situ formed and uniformly scattered of metallic V and MgS during both ball-milling and the initial hydrogen desorption, and the synergic catalytic effect of metallic V and MgS facilitates the improved hydrogen desorption of MgH2. The MgH2–15 wt% rGO@VS4 composite starts releasing hydrogen at 180 °C and peaks at 220 °C, which is 145 °C and 128 °C lower than that of the Pristine MgH2, respectively. The energy required for H2 desorption from MgH2 is decreased to 63.8 kJ mol−1, 58.9 kJ mol−1 lower than that of the Pristine MgH2. Furthermore, the MgH2–15 wt% rGO@VS4 composite shows excellent cycling stability, of which reversible hydrogen capacity can stabilize at about 5.9 wt% with capacity retention of 98.2 % at 300 °C for 100 cycles. This study provides a deeper insight into metallic V and MgS to enhance the hydrogen desorption of solid-state hydrogen storage materials and also offers a perspective for the construction of high-activity catalysts for solid-state hydrogen storage materials.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"103 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143822857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of LIPUS on the degradation behavior of magnesium alloy scaffolds for bone repair: Insights from in vitro and in vivo studies LIPUS对镁合金骨修复支架降解行为的影响：来自体外和体内研究的见解

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-11 DOI: 10.1016/j.jma.2025.02.031

Yuan Zhang, Jun Wang, Hongyan Tang, Mingran Zheng, Delin Ma, Junfei Huang, Wenxiang Li, Qichao Zhao, Zhaotong Sun, Wancheng Li, Jie Wang, Shijie Zhu, Liguo Wang, Xiaochao Wu, Shaokang Guan

{"title":"Effect of LIPUS on the degradation behavior of magnesium alloy scaffolds for bone repair: Insights from in vitro and in vivo studies","authors":"Yuan Zhang, Jun Wang, Hongyan Tang, Mingran Zheng, Delin Ma, Junfei Huang, Wenxiang Li, Qichao Zhao, Zhaotong Sun, Wancheng Li, Jie Wang, Shijie Zhu, Liguo Wang, Xiaochao Wu, Shaokang Guan","doi":"10.1016/j.jma.2025.02.031","DOIUrl":"https://doi.org/10.1016/j.jma.2025.02.031","url":null,"abstract":"Magnesium (Mg) alloys have excellent biocompatibility and biodegradability, making them promising for clinical applications. However, their rapid degradation compared to bone healing limits their effectiveness. In this study, low-intensity pulsed ultrasound (LIPUS), widely used clinically to promote bone healing, was combined with Mg alloy scaffolds to evaluate scaffold degradation under dynamic conditions, in vitro using Hanks’ balanced salt solution + BSA solution and in vivo in the femoral condyles of male SD rats. Results showed that LIPUS accelerated the initial degradation of the scaffold in both in vivo and in vitro experiments. In vitro, LIPUS increased BSA adsorption on scaffold surfaces, with adsorption increasing alongside LIPUS intensity. Limited BSA replenishment led to a thin organic-inorganic film that provided weak resistance to corrosive ions, accelerating degradation. Cavitation induced by LIPUS caused microbubble collapse, detaching Ca-P salts from scaffold surfaces. In vivo, LIPUS enhanced cell membrane permeability and activity, promoting the secretion of substances that formed a thicker organic-inorganic composite layer. Continuous material replenishment in the in vivo environment ensured the protective effect of this layer against corrosive ions, while embedded Ca-P salts were less likely to detach. In addition, LIPUS promotes bone modification. These findings highlight the potential of combining LIPUS with Mg alloys to regulate scaffold degradation, offering innovative strategies for clinical bone repair.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"4 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimation of Peierls-Nabarro stress of dislocations by the first-principles calculation in Mg alloys and their effects on plasticity 用第一性原理计算估计镁合金位错的Peierls-Nabarro应力及其对塑性的影响

IF 17.6 1区材料科学

Journal of Magnesium and Alloys Pub Date : 2025-04-10 DOI: 10.1016/j.jma.2025.01.026

Mingdi Yu, Jingya Wang, Zhigang Ding, Bo Hu, Hongwei Xiong, Sheng Zhang, Zhenfei Jiang, Zhihua Dong, Tao Ying, Xiaoqin Zeng

{"title":"Estimation of Peierls-Nabarro stress of dislocations by the first-principles calculation in Mg alloys and their effects on plasticity","authors":"Mingdi Yu, Jingya Wang, Zhigang Ding, Bo Hu, Hongwei Xiong, Sheng Zhang, Zhenfei Jiang, Zhihua Dong, Tao Ying, Xiaoqin Zeng","doi":"10.1016/j.jma.2025.01.026","DOIUrl":"https://doi.org/10.1016/j.jma.2025.01.026","url":null,"abstract":"Poor plasticity is an intrinsic disadvantage of magnesium (Mg) alloys, which limits their wide application at room temperature. Alloying is an accepted method to tune the plastic deformation mode and improve plasticity. However, the effect of solute atoms on the activation of different dislocations is still unclear and has rarely been systematically investigated in Mg alloys. In this work, the formulations of Peierls-Nabarro stresses (σp) for edge and screw dislocations along various slip planes in Mg-X (X = Y, Ca, Nd, Zn, Al and Sn) alloys are firstly derivate, as well as the calculation of the parameter K (energy factor) based on the first-principles calculation. The effects of solute atoms on the σp of various types of dislocations are systematically studied. The difference of the σp between the Mg-X alloy and pure Mg, i.e., Δσp, is determined, which is strongly influenced by the solute atoms. The negative Δσp reflects the promotion of dislocation activation. The relationship between the Δσp of different non-basal dislocations and elongation in eight Mg-X alloys is explored. The simultaneous improvement of the activation of the prismatic 〈a〉 and the pyramidal 〈c + a〉 dislocations is discovered, which can be achieved by specific alloying elements. Cooperative activation of the prismatic 〈a〉 and the pyramidal 〈c + a〉 dislocations owing to the reduced Δσp is shown to closely correlate with the significant increased plasticity of the Mg alloys. These findings advance a novel perspective on alloy design strategies for Mg alloys with improved plasticity.","PeriodicalId":16214,"journal":{"name":"Journal of Magnesium and Alloys","volume":"39 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143814343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0